/**
 * @license Highcharts JS v5.0.6 (2016-12-07)
 * Highcharts funnel module
 *
 * (c) 2010-2016 Torstein Honsi
 *
 * License: www.highcharts.com/license
 */
(function (factory) {
  if (typeof module === 'object' && module.exports) {
    module.exports = factory;
  } else {
    factory(Highcharts);
  }
}(function (Highcharts) {
  (function (Highcharts) {
    /**
     * Highcharts funnel module
     *
     * (c) 2010-2016 Torstein Honsi
     *
     * License: www.highcharts.com/license
     */
    /* eslint indent:0 */
    'use strict';

    // create shortcuts
    var seriesType = Highcharts.seriesType,
      seriesTypes = Highcharts.seriesTypes,
      noop = Highcharts.noop,
      each = Highcharts.each;


    seriesType('funnel', 'pie', {
        animation: false,
        center: ['50%', '50%'],
        width: '90%',
        neckWidth: '30%',
        height: '100%',
        neckHeight: '25%',
        reversed: false,
        size: true, // to avoid adapting to data label size in Pie.drawDataLabels


      },

      // Properties
      {
        animate: noop,

        /**
         * Overrides the pie translate method
         */
        translate: function () {

          var
            // Get positions - either an integer or a percentage string must be given
            getLength = function (length, relativeTo) {
              return (/%$/).test(length) ?
              relativeTo * parseInt(length, 10) / 100 :
                parseInt(length, 10);
            },

            sum = 0,
            series = this,
            chart = series.chart,
            options = series.options,
            reversed = options.reversed,
            ignoreHiddenPoint = options.ignoreHiddenPoint,
            plotWidth = chart.plotWidth,
            plotHeight = chart.plotHeight,
            cumulative = 0, // start at top
            center = options.center,
            centerX = getLength(center[0], plotWidth),
            centerY = getLength(center[1], plotHeight),
            width = getLength(options.width, plotWidth),
            tempWidth,
            getWidthAt,
            height = getLength(options.height, plotHeight),
            neckWidth = getLength(options.neckWidth, plotWidth),
            neckHeight = getLength(options.neckHeight, plotHeight),
            neckY = (centerY - height / 2) + height - neckHeight,
            data = series.data,
            path,
            fraction,
            half = options.dataLabels.position === 'left' ? 1 : 0,

            x1,
            y1,
            x2,
            x3,
            y3,
            x4,
            y5;

          // Return the width at a specific y coordinate
          series.getWidthAt = getWidthAt = function (y) {
            var top = (centerY - height / 2);

            return y > neckY || height === neckHeight ?
              neckWidth :
            neckWidth + (width - neckWidth) * (1 - (y - top) / (height - neckHeight));
          };
          series.getX = function (y, half) {
            return centerX + (half ? -1 : 1) * ((getWidthAt(reversed ? 2 * centerY - y : y) / 2) + options.dataLabels.distance);
          };

          // Expose
          series.center = [centerX, centerY, height];
          series.centerX = centerX;

          /*
           * Individual point coordinate naming:
           *
           * x1,y1 _________________ x2,y1
           *  \                         /
           *   \                       /
           *    \                     /
           *     \                   /
           *      \                 /
           *     x3,y3 _________ x4,y3
           *
           * Additional for the base of the neck:
           *
           *       |               |
           *       |               |
           *       |               |
           *     x3,y5 _________ x4,y5
           */


          // get the total sum
          each(data, function (point) {
            if (!ignoreHiddenPoint || point.visible !== false) {
              sum += point.y;
            }
          });

          each(data, function (point) {
            // set start and end positions
            y5 = null;
            fraction = sum ? point.y / sum : 0;
            y1 = centerY - height / 2 + cumulative * height;
            y3 = y1 + fraction * height;
            //tempWidth = neckWidth + (width - neckWidth) * ((height - neckHeight - y1) / (height - neckHeight));
            tempWidth = getWidthAt(y1);
            x1 = centerX - tempWidth / 2;
            x2 = x1 + tempWidth;
            tempWidth = getWidthAt(y3);
            x3 = centerX - tempWidth / 2;
            x4 = x3 + tempWidth;

            // the entire point is within the neck
            if (y1 > neckY) {
              x1 = x3 = centerX - neckWidth / 2;
              x2 = x4 = centerX + neckWidth / 2;

              // the base of the neck
            } else if (y3 > neckY) {
              y5 = y3;

              tempWidth = getWidthAt(neckY);
              x3 = centerX - tempWidth / 2;
              x4 = x3 + tempWidth;

              y3 = neckY;
            }

            if (reversed) {
              y1 = 2 * centerY - y1;
              y3 = 2 * centerY - y3;
              y5 = (y5 ? 2 * centerY - y5 : null);
            }
            // save the path
            path = [
              'M',
              x1, y1,
              'L',
              x2, y1,
              x4, y3
            ];
            if (y5) {
              path.push(x4, y5, x3, y5);
            }
            path.push(x3, y3, 'Z');

            // prepare for using shared dr
            point.shapeType = 'path';
            point.shapeArgs = {
              d: path
            };


            // for tooltips and data labels
            point.percentage = fraction * 100;
            point.plotX = centerX;
            point.plotY = (y1 + (y5 || y3)) / 2;

            // Placement of tooltips and data labels
            point.tooltipPos = [
              centerX,
              point.plotY
            ];

            // Slice is a noop on funnel points
            point.slice = noop;

            // Mimicking pie data label placement logic
            point.half = half;

            if (!ignoreHiddenPoint || point.visible !== false) {
              cumulative += fraction;
            }
          });
        },
        /**
         * Draw a single point (wedge)
         * @param {Object} point The point object
         * @param {Object} color The color of the point
         * @param {Number} brightness The brightness relative to the color
         */
        drawPoints: seriesTypes.column.prototype.drawPoints,

        /**
         * Funnel items don't have angles (#2289)
         */
        sortByAngle: function (points) {
          points.sort(function (a, b) {
            return a.plotY - b.plotY;
          });
        },

        /**
         * Extend the pie data label method
         */
        drawDataLabels: function () {
          var data = this.data,
            labelDistance = this.options.dataLabels.distance,
            leftSide,
            sign,
            point,
            i = data.length,
            x,
            y;

          // In the original pie label anticollision logic, the slots are distributed
          // from one labelDistance above to one labelDistance below the pie. In funnels
          // we don't want this.
          this.center[2] -= 2 * labelDistance;

          // Set the label position array for each point.
          while (i--) {
            point = data[i];
            leftSide = point.half;
            sign = leftSide ? 1 : -1;
            y = point.plotY;
            x = this.getX(y, leftSide);

            // set the anchor point for data labels
            point.labelPos = [
              0, // first break of connector
              y, // a/a
              x + (labelDistance - 5) * sign, // second break, right outside point shape
              y, // a/a
              x + labelDistance * sign, // landing point for connector
              y, // a/a
              leftSide ? 'right' : 'left', // alignment
              0 // center angle
            ];
          }

          seriesTypes.pie.prototype.drawDataLabels.call(this);
        }

      });

    /**
     * Pyramid series type.
     * A pyramid series is a special type of funnel, without neck and reversed by default.
     */
    seriesType('pyramid', 'funnel', {
      neckWidth: '0%',
      neckHeight: '0%',
      reversed: true
    });

  }(Highcharts));
}));
